Let’s look at your Pop-up Observation Sheet and your three completed cards to make conjectures about the geometry that makes v-fold mechanisms pop. Start by focusing on symmetry.

A flat sheet of paper can transform into a joyful 3D celebration with this pop up birthday card tutorial. The design features a layered cake that springs to life when the card is opened, creating an ...

Bring birthdays to life with stunning DIY pop-up greeting cards that turn ordinary celebrations into unforgettable moments!